Dynamic Voltage Boosting for TDD Radio Power Loss
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Solution Overview
Problem
Existing methods for reducing power dissipation in electrical conductors supplying DC power to TDD radios are inefficient due to the need for costly and difficult measurements of current and resistance, which are not easily obtained.
Innovation Solution
Synchronizing a DC-DC voltage converter with an external time source to receive TDD frame configurations and reference times, allowing the converter to adjust its output voltage based on the TDD frame structure, increasing voltage during downlink subframes and decreasing it during uplink subframes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If voltage boosting is implemented to reduce current and power dissipation in electrical conductors, then power dissipation is diminished, but device complexity increases due to the need for voltage booster and timing synchronization components
Solution Approach 1:
The patent implements dynamic voltage adjustment by synchronizing the DC-DC voltage converter with TDD frame timing, allowing the voltage to vary dynamically between high and low states based on transmission activity. This dynamic operation reduces average power dissipation while managing the complexity through intelligent control rather than static hardware additions.
Solution Approach 2:
The voltage boosting operates periodically synchronized with TDD frame structures, applying high voltage during transmission periods and reducing it during non-transmission periods. This periodic action pattern matches the inherent periodicity of TDD communication frames, efficiently reducing power dissipation in electrical conductors.
2Loss of energy
If measurements of current and resistance are performed to determine power dissipation, then power dissipation can be reduced, but the cost and difficulty of obtaining such measurements increase
Solution Approach 1:
The patent introduces a DC-DC voltage converter as an intermediary device between the power source and the radio equipment. This intermediary allows indirect control and measurement of power dissipation through voltage monitoring and adjustment, avoiding the need for direct current and resistance measurements in the electrical conductors.
Solution Approach 2:
The patent replaces physical measurement approaches (current and resistance measurements) with an electrical control approach using a DC-DC voltage converter. By controlling voltage at the converter output and synchronizing with TDD frames, the system achieves power dissipation reduction without requiring difficult electrical measurements in the transmission conductors.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method effectively reduces power dissipation in electrical conductors by aligning voltage output with TDD frame activities, without requiring costly measurements of current and resistance.
Implementation Method 1
a DC-DC voltage converter circuitry 220A-2 configured to be electrically coupled, through the electrical conductors 220G, to a DC power input of the TDD radio 220C
Data Source
AI summary
Techniques are provided for diminishing power loss in electrical conductors used to provide electrical power to a radio configured to use time domain duplexing (TDD). Because the TDD radio typically transmits data during a downlink subframe, the TDD radio generally consumes more power, and thus draws more current through the electrical conductors, then during an uplink subframe when the TDD radio is configured to receive. Thus, during the downlink subframe, a DC voltage, output by a DC-DC voltage converter to the electrical conductors, is increased to lessen current drawn by the radio through the electrical conductors. As a result, power loss in the electrical conductors is reduced.